|Budget Amount *help
¥118,820,000 (Direct Cost: ¥91,400,000、Indirect Cost: ¥27,420,000)
Fiscal Year 2013: ¥21,710,000 (Direct Cost: ¥16,700,000、Indirect Cost: ¥5,010,000)
Fiscal Year 2012: ¥21,840,000 (Direct Cost: ¥16,800,000、Indirect Cost: ¥5,040,000)
Fiscal Year 2011: ¥21,710,000 (Direct Cost: ¥16,700,000、Indirect Cost: ¥5,010,000)
Fiscal Year 2010: ¥24,310,000 (Direct Cost: ¥18,700,000、Indirect Cost: ¥5,610,000)
Fiscal Year 2009: ¥29,250,000 (Direct Cost: ¥22,500,000、Indirect Cost: ¥6,750,000)
We used 3 sets of Free Air CO2 Enrichment (FACE) ring of ambient (about 390 ppm) and elevated CO2 (500 ppm predicted in 2040 by IPCC), respectively. We planted 3 kinds of birch, 3 kinds of larches (Larix gmelinii x kaempfrei; its parents), oak (Quercus mongolica var. crispula) and beech (Fagus crenata). We fumigated CO2 on these species for 4 years during growing season and monitored leaf area index (LAI: leaf area per ground area: m2/m2) of 3 kinds of birch (Betula ermanii, B. maximowicziana, B. platyphylla var. japonica) stands. There was photosynthetic down-regulation in all species. Increase of LAI and stem mass of 3 birch stands had been increased until canopy closure. Increase pattern of LAI was different among species, which may bring different stand structure in the future elevated CO2 world..